You are viewing a plain text version of this content. The canonical link for it is here.
Posted to issues@spark.apache.org by "Yang Jie (Jira)" <ji...@apache.org> on 2019/10/14 03:42:00 UTC
[jira] [Updated] (SPARK-29454) Reduce unsafeProjection call times
when read parquet file
[ https://issues.apache.org/jira/browse/SPARK-29454?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Yang Jie updated SPARK-29454:
-----------------------------
Summary: Reduce unsafeProjection call times when read parquet file (was: Reduce one unsafeProjection call when read parquet file)
> Reduce unsafeProjection call times when read parquet file
> ---------------------------------------------------------
>
> Key: SPARK-29454
> URL: https://issues.apache.org/jira/browse/SPARK-29454
> Project: Spark
> Issue Type: Improvement
> Components: SQL
> Affects Versions: 2.2.3, 2.3.4, 2.4.4
> Reporter: Yang Jie
> Priority: Major
>
> ParquetGroupConverter call unsafeProjection function to covert SpecificInternalRow to UnsafeRow every times when read Parquet data file use ParquetRecordReader, then ParquetFileFormat will call unsafeProjection function to covert this UnsafeRow to another UnsafeRow again when partitionSchema is not empty , and on the other hand PartitionReaderWithPartitionValues always do this convert process when use DataSourceV2.
> I think the first time convert in ParquetGroupConverter is redundant and ParquetRecordReader return a SpecificInternalRow is enough.
--
This message was sent by Atlassian Jira
(v8.3.4#803005)
---------------------------------------------------------------------
To unsubscribe, e-mail: issues-unsubscribe@spark.apache.org
For additional commands, e-mail: issues-help@spark.apache.org